Improved nick list, added drawer toggle

...a/de/kuschku/quasseldroid_ng/ui/chat/BufferListAdapter.kt

...n/java/de/kuschku/quasseldroid_ng/ui/chat/ChatActivity.kt

...ava/de/kuschku/quasseldroid_ng/ui/chat/NickListAdapter.kt

...va/de/kuschku/quasseldroid_ng/ui/chat/NickListFragment.kt

...java/de/kuschku/quasseldroid_ng/util/helper/ViewHelper.kt

app/src/main/res/drawable/bg_badge.xml

app/src/main/res/layout/activity_main.xml

app/src/main/res/layout/fragment_nick_list.xml

app/src/main/res/layout/widget_buffer.xml

app/src/main/res/layout/widget_network.xml

app/src/main/res/layout/widget_nick.xml

app/src/main/res/layout/widget_nick_away.xml

...quassel/protocol/primitive/serializer/StringSerializer.kt

...n/java/de/kuschku/libquassel/quassel/syncables/Network.kt